/* =========================
   RESET
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* =========================
   CSS VARIABLES (Dark Theme)
========================= */
:root {
  --bg-main: #07111f;
  --bg-secondary: #0d1728;
  --card-bg: rgba(255, 255, 255, 0.06);
  --text-main: #f5f7fb;
  --text-soft: #b8c2d1;
  --accent: #9b5cff;
  --accent-2: #ff4fd8;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

/* =========================
   LIGHT THEME
========================= */
body {
  font-family: 'Inter', sans-serif;
}
body.light {
  --bg-main: #f8fafc;
  --bg-secondary: #eef2f7;
  --card-bg: rgba(255, 255, 255, 0.92);
  --text-main: #1e2430;
  --text-soft: #5f6b7a;
  --accent: #7c3aed;
  --accent-2: #d946ef;
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  background:
    radial-gradient(circle at top center, rgba(155, 92, 255, 0.06), transparent 32%),
    linear-gradient(180deg, #f8fafc, #eef2f7);
}

body.light input::placeholder,
body.light textarea::placeholder {
  color: #8a94a6;
}

body.light .hero-badge {
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.25);
  color: #6d28d9;
}

body.light .tab-btn:hover {
  background: rgba(0, 0, 0, 0.05);
}


/* =========================
   BASE
========================= */
body {
  font-family: Arial, sans-serif;
  background:
    radial-gradient(circle at top center, rgba(155, 92, 255, 0.10), transparent 30%),
    linear-gradient(180deg, var(--bg-main), var(--bg-secondary));
  color: var(--text-main);
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
}

input,
textarea {
  font-family: inherit;
}

input::placeholder,
textarea::placeholder {
  font-family: inherit;
  color: var(--text-soft);
  opacity: 1;
}

/* =========================
   SHARED LAYOUT
========================= */
.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

.section-heading {
  text-align: center;
  margin-bottom: 35px;
}

.section-label {
  color: var(--accent-2);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.section-heading h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.section-text {
  color: var(--text-soft);
  max-width: 700px;
  margin: 0 auto;
}

.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 24px;
  padding: 32px;
  backdrop-filter: blur(14px);
}

/* =========================
   NAVBAR
========================= */
.navbar {
  width: min(1200px, 92%);
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.25s ease;
}

.nav-links a:hover {
  color: var(--accent-2);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 10px;
  transition: color 0.25s ease, background 0.25s ease;
}

.tab-btn:hover {
  color: var(--accent-2);
  background: rgba(255, 255, 255, 0.06);
}

.tab-btn.active {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white;
}

.theme-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-main);
  padding: 10px 16px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 700;
  transition: background 0.25s ease;
}

.theme-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.theme-btn img {
  width: 20px;
  height: 20px;
}

/* =========================
   HERO
========================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero-content {
  width: min(900px, 90%);
  margin: auto;
  text-align: center;
  padding: 40px 0 80px;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 24px;
}

.hero-title span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}


/* Visitor greeting */
.visitor-greeting {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}


.visitor-greeting #greeting-form {
  display: flex;
  gap: 12px;
  width: 100%;
  max-width: 500px;
}

.visitor-greeting #visitor-name-input {
  flex: 1;
  width: 50%;
  min-width: 0;
  max-width: 420px;
  padding: 16px 20px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  font-size: 0.95rem;
  text-align: center;
}

.visitor-greeting #greeting-display p {
  color: var(--text-soft);
  font-size: 1rem;
  margin-bottom: 6px;
  text-align: center;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 20px;
}

/* =========================
   BUTTONS
========================= */
.primary-btn{
  display: inline-block;
  padding: 14px 24px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
}

.primary-btn {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 10px 30px rgba(155, 92, 255, 0.35);
  border: none;
  cursor: pointer;
}

.primary-btn:hover {
  transform: translateY(-3px);
}

/* =========================
   ABOUT
========================= */
/* ABOUT LAYOUT */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

/* LEFT TEXT */
.about-text h2 {
  color: var(--accent-2);
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-soft);
  line-height: 1.8; 
  font-size: 0.95rem; 
  margin-bottom: 16px;
  max-width: 500px;
}

/* RIGHT SKILLS GRID */
.about-skills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.skill-card {
  width: 100%;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  position: relative;
  background: rgba(255, 255, 255, 0.03);
}

/* Gradient border */
.skill-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  padding: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-mask: 
    linear-gradient(#000 0 0) content-box, 
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}
@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-text {
    text-align: center;
  }

  .about-text p {
    margin: 0 auto 16px;
  }
}

/* =========================
   FILTER + SORT
========================= */
.search-wrapper {
  margin-bottom: 20px;
  text-align: center;
}

.search-input {
  width: 60%;
  max-width: 400px;
  padding: 10px 15px;
  border-radius: 8px;
  border: 1px solid #ccc;
  outline: none;
  font-size: 14px;
}

.search-input:focus {
  border-color: #4f46e5;
}
.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-btn {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-main);
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.filter-btn:hover {
  transform: translateY(-3px);
}

.filter-btn.active {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: white;
}

.sort-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sort-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-soft);
  margin: 0;
}

.sort-select {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: border-color 0.25s ease;
}

.sort-select:focus {
  border-color: var(--accent);
}

/* =========================
   PROJECTS GRID
========================= */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-3px);
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.project-content {
  padding: 22px;
}

.project-tag {
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.project-content h3 {
  margin-bottom: 10px;
  font-size: 1.3rem;
}

.project-content p:last-child {
  color: var(--text-soft);
}

.empty-message {
  text-align: center;
  margin-top: 20px;
  color: var(--text-soft);
  font-weight: 700;
}

/* =========================
   GITHUB SECTION
========================= */
.github-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--text-soft);
  padding: 40px 0;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.github-error {
  text-align: center;
  padding: 30px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text-soft);
}

.github-error a {
  color: var(--accent-2);
  font-weight: 700;
  text-decoration: none;
}

.github-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.github-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  text-decoration: none;
  color: var(--text-main);
  transition: transform 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.github-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.github-card h3 {
  font-size: 1.05rem;
  color: var(--accent);
}

.github-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  flex: 1;
}

.github-card-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.85rem;
  color: var(--text-soft);
  margin-top: 6px;
}

.github-card-footer span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.view-link {
  margin-left: auto;
  font-weight: 700;
  color: var(--accent);
}

/* =========================
   CONTACT FORM
========================= */
form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

label {
  font-weight: 700;
  margin-top: 8px;
}

input,
textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(155, 92, 255, 0.12);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-btn {
  margin-top: 12px;
  cursor: pointer;
}

.form-message {
  margin-top: 10px;
  font-weight: 700;
  min-height: 24px;
}

.form-message.success {
  color: #34d399;
}

.form-message.error {
  color: #f87171;
}

.field-error {
  color: #f87171;
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 2px;
}

/* =========================
   UTILITY
========================= */
.hidden {
  display: none;
}

/* =========================
   FOOTER
========================= */
footer {
  text-align: center;
  padding: 30px 20px;
  color: var(--text-soft);
}

/* =========================
   ANIMATIONS
========================= */
.fade-in {
  animation: fadeInUp 0.9s ease both;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .github-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }

  .navbar {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero-title {
    font-size: 2.6rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .projects-grid,
  .github-grid {
    grid-template-columns: 1fr;
  }

  .glass-card {
    padding: 22px;
  }

  .controls-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }
}